package com.qinghong.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                // 1.RequestContextHolder拿到刚进来的这个请求
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (attributes!=null){
                    System.out.println("拦截器线程..."+Thread.currentThread().getId());
                    HttpServletRequest request = attributes.getRequest();
                    if (request!=null){
                        // 2、同步请求头数据 Cookie
                        String cookie = request.getHeader("Cookie");
                        // 给新请求同步了老请求的cookie
                        requestTemplate.header("Cookie",cookie);
                    }
                }

                System.out.println("远程之前先进行requestInterceptor.apply");
            }
        };
    }
}
